import { Link, useNavigate } from 'react-router-dom'
import { Card, Breadcrumb, Form, Button, Radio, DatePicker,
   Select, Popconfirm, Table, Tag, Space } from 'antd'
import locale from 'antd/es/date-picker/locale/zh_CN' // 引入汉化包
import { EditOutlined, DeleteOutlined } from '@ant-design/icons'
import type { FormProps, PaginationProps } from 'antd'
import type { Dayjs } from 'dayjs'

import { useChannel } from '@/hooks/useChannel'
import { useArticle } from '@/hooks/useArticle'
import img404 from '@/assets/error.png'
import type { FilterArticleParams, Article } from '@/apis/article'


const { Option } = Select
const { RangePicker } = DatePicker

const ArticleStatus: Map<number, JSX.Element> = new Map([
  [0, <Tag color="processing">草稿</Tag>],
  [1, <Tag color="warning">待审核</Tag>,],
  [2, <Tag color="success">审核通过</Tag>]
]);

const Article = () => {
  // 准备频道数据
  const channelList = useChannel();  
  const navigate = useNavigate();

  // 准备筛选的查询参数
  const [params, setParams]  = useState<FilterArticleParams>({
    page: 1,
    per_page: 4,
    begin_pubdate: null,
    end_pubdate: null,
    status: null,
    channel_id: null
  })
  const { articleList: article, delArticle } = useArticle(params); // 传递参数获取文章数据

  // 准备列数据
  const columns = [
    {
      title: '封面',
      dataIndex: 'cover',
      width: 120,
      render: (cover: Article['cover']) => {
        return <img src={cover.images[0] || img404} width={80} height={60} alt="" />
      }
    },
    {
      title: '标题',
      dataIndex: 'title',
      width: 220
    },
    {
      title: '状态',
      dataIndex: 'status',
      render: (data: Article['status']) => ArticleStatus.get(data)
    },
    {
      title: '发布时间',
      dataIndex: 'pubdate'
    },
    {
      title: '阅读数',
      dataIndex: 'read_count'
    },
    {
      title: '评论数',
      dataIndex: 'comment_count'
    },
    {
      title: '点赞数',
      dataIndex: 'like_count'
    },
    {
      title: '操作',
      render: useCallback(
        (data: Article) => {
          return  (
            <Space size="middle">
              <Button 
                type="primary" 
                shape="circle" 
                icon={<EditOutlined />} 
                onClick={() => navigate(`/publish?id=${data.id}`)} 
              />
              <Popconfirm
                title="确认删除该条文章吗?"
                onConfirm={async () => {
                  await delArticle(data)
                  setParams({...params})
                }}
                okText="确认"
                cancelText="取消"
              >
                <Button
                  type="primary"
                  danger
                  shape="circle"
                  icon={<DeleteOutlined />}
                />
              </Popconfirm>
            </Space>
          )
        }, [params]
      )
    }
  ]

  // 筛选的回调
  const onFinish: FormProps['onFinish'] = useCallback(
    (
      form: { status: "" | 0 | 1 | 2, channel_id: string, date?: Dayjs[] }
    ) => {
      const { status, channel_id, date } = form
      setParams({
        page: 1,
        per_page: 4,
        begin_pubdate: date ? date[0].format("YYYY-MM-DD") : null,
        end_pubdate: date ? date[1].format("YYYY-MM-DD") : null,
        status: status === "" ? null : status,
        channel_id
      })
    }, []
  );

  const onPageChange: PaginationProps['onChange'] = useCallback(
    (page: number, pageSize: number) => {
      setParams({
        ...params,
        page,
        per_page: pageSize,
      })
    }, [params]
  );

  return (
    <div>
      <Card
        title={
          <Breadcrumb items={[
            { title: <Link to={'/'}>首页</Link> },
            { title: '文章列表' },
          ]} />
        }
        style={{ marginBottom: 20 }}
      >
        <Form 
          initialValues={{ status: '', channel_id: "" }}
          onFinish={onFinish}
        >
          <Form.Item label="状态" name="status">
            <Radio.Group>
              <Radio value={''}>全部</Radio>            
              <Radio value={0}>草稿</Radio>
              <Radio value={1}>待审核</Radio>
              <Radio value={2}>审核通过</Radio>
            </Radio.Group>
          </Form.Item>

          <Form.Item label="频道" name="channel_id">
            <Select
              placeholder="请选择文章频道"
              style={{ width: 120 }}
            >
              <Option value={""}>全部</Option>
              {
                channelList.map((channel) => (
                  <Option key={channel.id} value={channel.id}>{channel.name}</Option>
                ))
              }
            </Select>
          </Form.Item>

          <Form.Item label="日期" name="date">
            {/* 传入locale属性 控制中文显示*/}
            <RangePicker locale={locale}></RangePicker>
          </Form.Item>

          <Form.Item>
            <Button type="primary" htmlType="submit" style={{ marginLeft: 40 }}>
              筛选
            </Button>
          </Form.Item>
        </Form>
      </Card>
      <Card title={`根据筛选条件共查询到 ${article.count} 条结果：`}>
        <Table rowKey="id" columns={columns} dataSource={article.list} pagination={{
          total: article.count,
          pageSize: params.per_page,
          onChange: onPageChange
        }}/>
      </Card>
    </div>
  )
}

export default Article